14
Figure 2C.—Operational Amplifier.
IN ANSWERING QUESTIONS 2-27
THROUGH 2-29, REFER TO FIGURE 2C.
2-27. What is part A of the figure?
1. An input amplifier
2. A power amplifier
3. A voltage amplifier
4. A differential amplifier
2-28. What is part B of the figure?
1. A differential amplifier
2. A voltage amplifier
3. A power amplifier
4. A video amplifier
2-29. What is part C of the figure?
1.
An output amplifier
2.
A voltage amplifier
3.
A differential amplifier
4.
A high-impedance amplifier
2-30. If degenerative feedback is used in an
operational-amplifier circuit, which of
the following terms describes the circuit
configuration?
1. Open loop
2. Closed loop
3. Full circle
4. Neutralized
2-31. Which of the following signals
determines the stability of the output
signal from an operational-amplifier
circuit in which degenerative feedback is
used?
1. The input signal only
2. The feedback signal only
3. Both 1 and 2 above
4. The detected signal
THIS SPACE LEFT BLANK
INTENTIONALLY.
